Credit crunch? What credit crunch? Amir Khan and Ricky Hatton are pouring money into America to salvage and advance respectively their careers.

A year ago I advised Khan to head for the west coast to get some top-class sparring. I'm not saying it's too late. But it would have been a lot better to go with a reputation to build rather than one to rescue.

Nobody quite knows why some fighters are vulnerable when hit and why others have chins like granite. It is boxing's great mystery. It might not be fair but it is what it is.

Some fighters come along like Sugar Ray Leonard and Floyd Mayweather Jnr and have it all. Most of us are fallible.

That is why it is dangerous to say Khan will never come back. Others who have been knocked senseless have.

Lennox Lewis, for example, was nailed twice, by Oliver McCall and Hasim Rahman, and recovered.

What we can say is that Khan has lost the confidence of the boxing public. You only have to read the message boards to recognise that.

Freddie Roach, who will be working with Khan for the next six weeks in California, is talking about building strength in Khan's legs to help punch resistance. That is sensible, since the core strength of any fighter is sourced in that area between the knees and diaphragm.

But ultimately Khan has to accept that he is by nature vulnerable. By working in the gym with the best guys the hope is he that will develop a strategy that enables him to cope.

The first thing Roach will tell him is not to engage a banger in the way he did with Breidis Prescott. Khan was utterly devastated by Prescott within 17 seconds.

He must learn to diffuse aggressive guys that come at him. The way to do that is to share a ring with these guys every day. He'll make mistakes that he won't want to repeat.

The plan is to work with Manny Pacquiao ahead of his fight with Oscar De La Hoya, which will be brilliant for Khan. The Pacman was stopped himself at flyweight and was knocked down as a super bantam earlier in his career. Nobody is saying he is vulnerable now.

Hatton is another who has turned to an American trainer, in his case Floyd Mayweather Snr. On the surface it appears that Khan and Hatton should swap since their styles are closer to each other's trainers.

For Hatton it is more a matter of fine tuning, making subtle adjustments to his aggressive, pressure style.

His next fight against Paul Malignaggi is a tough assignment. He has already said he will quit if he loses.

There were cracks in Hatton's performance against Juan Lazcano. He has subsequently parted with his trainer Billy Graham and lost the services of strength coach and nutritionist Kerry Keyes.

Changes for the better or a workman blaming his tools? There are some in Manchester who believe the latter.